Mleczówka was formerly part of the German Empire. In the German Empire, the place was called Molkenflur.
The place is now called Mleczówka and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Mleczowka | Russian Empire | Rypin | 1914 |
| Mleczówka | Poland | Rypin | after the Versailles Treaty |
| Molkenflur | German Empire | Rippin (Westpr.) | 1939 |
| Mleczówka | Poland | Żuromin | 1945 |
| Mleczówka | Poland | Ciechanów | 1992 |